Means for impregnating liquids with gas.



PATENT-BD NOV. 19, 1907.

H. STROH.

MEANS FOR IMPRBGNATING LIQUIDS WITH GAS. APPLIUATION FILED Nov. 9.?1906.

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HEINRICH STROH, OF HEILBRONN, GERMANY.

' MEANS FOR IMPREGNATINGLIQUIDS WITH GAS.

To all whom 'it may concern.'

Be'it known that I, HEINRICH STROH, a subject of the German Emperor,residing at Heilbronn, Germany, have invented new and Im roved Means forImpregnating Liquids wit Gas, of which the following is a specification.

The object of my invention is to provide an apparatus for impregnatingliquids with gas in order to produce physical, chemical or biologicaleffects in liquids or gases or to regenerate and purify water.

In my apparatus gas is forced through an osmotic partition into a liquidwhich is caused to flow along the other side of such partition while theimpregnated liquid runs over alengthy course in a pipe, or conduit, soas to insure floating gas bubbles to be absorbed and prevent segregationof the incorporated gas.

The ap aratus by which I obtain these results is il ustrated in theannexed drawings.

Figure l is a longitudinal section partly broken away; Fig. 2 is across-section of my invention.

A ipe abc has its middle portion b enlarge and preferably made of 'linewire gauze which `in some instances is coated with a gas absorbingsubstance such for example as a mixture of caoutchouc and finely groundcarbon which thus forms a cylindrical membrane. This membrane issurrounded with a slightly wider and air-tight jacket d and the annularspace between these parts is in communication with the gas ingress tubee and egress tube g which latter is fitted with V a tap h. The internalfree space of the metal gauze pipe can be reduced by a more or lesslarge core c whose ends are preferably pointed or egg-sha ed and slitendwise so as to engage in metal ic cross-strips for centeringpurposes.` The apparatus is fitted with an ascension pipe f and can beadopted independently of or in connection with any form of pipeinstallation for liquids.

14er independent use, the apparatus is placed vertically or slightlyinclined so far into the liquid that the ascension pipe f is entirelylled with such liquid. By introducing gas into the a paratus thefollowing action takes place. wing to the head pressure of the liquidand its adhesion to the wet metal gauze, a superior gas pressure can becreated in the annular gas space to that of the liquid Without eitherthe gas or the liquid being able to pass through the wire gauze.

' Specification of Letters Patent.

Application tiled November 9,1906. Serial No. 342.696.

Patented Nov. 19, 1907.

When the gauze is covered with a membrane, the difference in pressurecan be carried still further. At the present time and independent of thepressure, the gas becomes absorbed or condensed through the mass of themembrane into which latter the liquid is unable to penetrate. By reasonof natural diffusion, the gas is slowly carried to the next fartherportion of the liquid slightly away -from the gauze. Practically, thediffusion affects only small depths, and therefore, the gas absorbed ina standing liquid can only escape therefrom in minute globules. Theescaping gas passes upwards into the ascension pipe j' in which latterthe real action of incorporating the gas takes lace correlative with thepressure and the so ving power of the particular gas used. The gas iscaused to flow along the comparatively narrow ascension pipe and therebyinduces a strong relative current of the liquid in the same directionwith the result that a constant renewal takes place from below of thefresh liquid so causing the same to come in contact with the membrane,while the impregnated liquid passes upwards.

I/Vhen the apparatus is placed in a tank, the height of the column ofliquid and consequently the strength of current generated in theapparatus with its resulting effect on the absorption of gas are limitedby the depth of such tank. By placing the apparatus in a conduit, theliquid is enabled to flow through both. This arrangement will enable theeffective pressure column or head to be increased to a great range.

l/Vhen a portion of mixed gases, after passing through the annularspace, is allowed to escape from the tube g through the tap 7L a partialseparation of the gases takes place. For example, when atmospheric airis used with Water as the absorbing medium, it will be found that alarger proportion of oxygen than nitrogen passes through the osmoticmembrane and is absorbed in the water. Consequently the gas mixturepassing through the membrane, will have gained in oxygen while theremaining gas at the other side of such membrane is richer in nitrogen.

I claim:

l. The apparatus for impregnating liquids with gas, which comprises anannular gas chamber in an enlarged portion of a pipe between a solidouter jacket and a wire gauze which latter forms a central water chamberas set forth.

i ingress nozzle and an egress nozzle connected 2. The apparatus forimpregnating liquids with gas Which comprises a Water pipe combined witha Wire gauze enlargement and an external jacket over said Wire gauze, an

to said jacket, as set forth.

3. The apparatus for impregnating liquids With gas Which comprises aWater pipe combined with a Wire gauze enlargement, central plug in theinterior of the Wire gauze, an eX- ternal jacket over said Wire gauze,an ingress nozzle and an egress nozzle connected to said jacket as setforth.

4. The apparatus for impregnating liquids with gas which comprises aWater pipe combined with a Wire gauze enlargement, a double pointedcentral plug in said Wiregauze, a cross-shaped centering holder at eachend of said plug, an external acket over said Wire gauze, an ingressnozzle and an egress nozzle connected to said jacket as set forth.

HEINRICH STROH. lVitnesses:

ADALBERT L. BAUER, ERNST ENTENMANN.

